Trade-off between tree planting and wetland conservation in China

Yi Xi, Shushi Peng (), Gang Liu, Agnès Ducharne, Philippe Ciais, Catherine Prigent, Xinyu Li and Xutao Tang
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Yi Xi: Peking University
Shushi Peng: Peking University
Gang Liu: Peking University
Agnès Ducharne: Sorbonne Université, CNRS, EPHE, Laboratoire METIS (Milieux environnementaux, transferts et interaction dans les hydrosystèmes et les sols)
Philippe Ciais: Laboratoire des Sciences du Climat et de l’Environnement, LSCE/IPSL, CEA-CNRS-UVSQ, Université Paris-Saclay
Catherine Prigent: CNRS, Sorbonne Université, Observatoire de Paris, Université PSL, LERMA
Xinyu Li: Peking University
Xutao Tang: Peking University

Nature Communications, 2022, vol. 13, issue 1, 1-11

Abstract: Abstract Trade-offs between tree planting programs and wetland conservation are unclear. Here, we employ satellite-derived inundation data and a process-based land surface model (ORCHIDEE-Hillslope) to investigate the impacts of tree planting on wetland dynamics in China for 2000–2016 and the potential impacts of near-term tree planting activities for 2017–2035. We find that 160,000–190,000 km2 (25.3–25.6%) of historical tree planting over wetland grid cells has resulted in 1,300–1,500 km2 (0.3–0.4%) net wetland loss. Compared to moist southern regions, the dry northern and western regions show a much higher sensitivity of wetland reduction to tree planting. With most protected wetlands in China located in the drier northern and western basins, continuing tree planting scenarios are projected to lead to a > 10% wetland loss relative to 2000 across 4–8 out of 38 national wetland nature reserves. Our work shows how spatial optimization can help the balance of tree planting and wetland conservation targets.

Date: 2022
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DOI: 10.1038/s41467-022-29616-7

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